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Tao J, Liu W, Ding W, Han R, Shen Q, Xia Y, Zhang Y, Sun W. A multiplex PCR assay with a common primer for the detection of eleven foodborne pathogens. J Food Sci 2020; 85:744-754. [PMID: 31999364 DOI: 10.1111/1750-3841.15033] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 11/28/2019] [Accepted: 12/03/2019] [Indexed: 11/27/2022]
Abstract
Salmonella enterica, Listeria monocytogenes, Shigella flexneri, Escherichia coli O157:H7, Vibrio parahaemolyticus, Staphylococcus aureus, Vibrio cholerae, Clostridium botulinum type A, Bacillus cereus, Clostridium perfringens Alpha toxin, and Yersinia enterocolitica are 11 common foodborne pathogens. Traditional bacterial culture methods for detecting pathogens are time-consuming and labor-intensive. Multiplex PCR technology, which can detect multiple targets in a single tube, has been increasingly applied to microbial detection due to its high specificity, sensitivity, and fast response. This paper is to establish a multiplex PCR technology mediated by a common primer for the detection of these 11 common foodborne pathogens in order to achieve the goal of nondirectional screening for these 11 common foodborne pathogens. The specificity of the established CP-MPCR detection system was first verified by 100 clinical isolates. The sensitivity of the CP-MPCR detection system was then detected by using cultured bacteria preparations and has been confirmed with a high sensitivity of 103 to 104 CFU/mL, among them, the sensitivity of the CP-MPCR for Vibrio cholerae and S. flexneri can even achieve 102 CFU/mL. Sixty anal swab samples collected from Suzhou CDC and 16 enrichment cultured solutions of food samples collected from the Suzhou Food Inspection and Testing Center were tested using the CP-MPCR system. A total of 32 positive results were detected. PRACTICAL APPLICATION: Food poisoning incidents occur frequently around the world, mainly because of the contamination of food by pathogenic bacteria and serious harm to human health. The method provided in this study can detect 11 foodborne pathogens in food, which can effectively prevent the spread of pathogenic microorganisms. At the same time, for the food poisoning incident that has already occurred, this method can be used for diagnosis to find out the cause.
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Affiliation(s)
- Jing Tao
- Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow Univ., Suzhou, Jiangsu, China
| | - Wanwan Liu
- Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow Univ., Suzhou, Jiangsu, China
| | - Wei Ding
- Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow Univ., Suzhou, Jiangsu, China
| | - Rong Han
- Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow Univ., Suzhou, Jiangsu, China
| | - Qiang Shen
- Suzhou Center for Disease Control and Prevention, Suzhou, Jiangsu, China
| | - Yu Xia
- Suzhou Center for Disease Control and Prevention, Suzhou, Jiangsu, China
| | - Yahan Zhang
- Suzhou Inst. for Food Control, Suzhou, Jiangsu, China
| | - Wanping Sun
- Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow Univ., Suzhou, Jiangsu, China
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Liu W, Wang X, Tao J, Xi B, Xue M, Sun W. A Multiplex PCR Assay Mediated by Universal Primers for the Detection of Adulterated Meat in Mutton. J Food Prot 2019; 82:325-330. [PMID: 30688538 DOI: 10.4315/0362-028x.jfp-18-302] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This study aimed to establish a multiplex PCR detection system mediated by "universal primers," which would be able to determine whether mutton meat contained nonmutton ingredients from rats, foxes, and ducks. Based on the sequence variation of specific mitochondrial genes, nine different multiplex PCR primers were designed, and four kinds of meat products were rapidly identified by electrophoresis using an optimized multiplex PCR system based on the molecular weight differences of the amplified products. Multiplex PCR applications optimized for meat food source from food samples for testing was used to verify the accuracy of the identification method. The results showed that the primers in multiple PCR system mediated by universal primers could be used for the rapid identification of rat, fox, duck, and sheep meat in mutton products, and the detection sensitivity could reach 0.05 ng/μL. The identification of food samples validated the practical value of this method. Therefore, a multiplex PCR system mediated by universal primers was established, which can be used to quickly identify the origin of animal ingredients from rats, foxes, and ducks in mutton products.
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Affiliation(s)
- Wanwan Liu
- 1 Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Xiaonan Wang
- 1 Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Jing Tao
- 1 Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Bangsheng Xi
- 1 Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Man Xue
- 2 Suzhou Institute for Food Control, Suzhou, Jiangsu, People's Republic of China
| | - Wanping Sun
- 1 Laboratory of Molecular Diagnostics, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, People's Republic of China
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Duan QQ, Lu SQ, Hu YX, Shen SN, Xi BS, Wang XN, Sun WP. A Multiplex PCR Assay Mediated by Universal Primer for the Diagnosis of Human Meningitis Caused by Six Common Bacteria. RUSS J GENET+ 2018. [DOI: 10.1134/s1022795418040075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Liu EP, Wang Y, He XH, Guan JJ, Wang J, Qin ZH, Sun WP. Whole Blood PCR Amplification with Pfu DNA Polymerase and Its Application in Single-Nucleotide Polymorphism Analysis. Genet Test Mol Biomarkers 2015; 19:610-6. [PMID: 26360116 DOI: 10.1089/gtmb.2015.0018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
AIMS Point-of-care genetic analysis may require polymerase chain reaction (PCR) to be carried out on whole blood. However, human blood contains natural inhibitors of PCR such as hemoglobin, immunoglobulin G, lactoferrin, and proteases, as well as anticoagulant agents, including EDTA and heparin that can reduce whole blood PCR efficiency. Our purpose was to develop a highly specific, direct whole blood single-nucleotide polymorphism (SNP) analysis method based on allele-specific (AS) PCR that is mediated by Pfu DNA polymerase and phosphorothioate-modified AS primers. RESULTS At high Mg(2+) concentrations, Pfu DNA polymerase efficiently amplified genomic DNA in a reaction solution containing up to 14% whole blood. Among the three anticoagulants tested, Pfu DNA polymerase showed the highest activity with sodium citrate. Meanwhile, Triton X-100 and betaine inhibited Pfu DNA polymerase activity in whole blood PCR, whereas trehalose had virtually no effect. These findings provided for the development of a low-cost, simple, and fast direct whole blood genotyping method that uses Pfu DNA polymerase combined with phosphorothioate AS primers for CYP2C9*3 and VKORC1(-1639) loci. CONCLUSIONS With its high DNA amplification efficiency and tolerance of various blood conditions, Pfu DNA polymerase can be used in clinical laboratories to analyze SNPs in whole blood samples.
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Affiliation(s)
- Er-Ping Liu
- 1 Department of Pharmacy, Changzhou Maternity and Child Health Care Hospital Affiliated to Nanjing Medical University , Changzhou, China
| | - Yan Wang
- 2 Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Soochow University School of Pharmaceutical Science , Suzhou, China
| | - Xiao-Hui He
- 2 Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Soochow University School of Pharmaceutical Science , Suzhou, China
| | - Jun-Jie Guan
- 2 Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Soochow University School of Pharmaceutical Science , Suzhou, China
| | - Jin Wang
- 2 Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Soochow University School of Pharmaceutical Science , Suzhou, China
| | - Zheng-Hong Qin
- 2 Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Soochow University School of Pharmaceutical Science , Suzhou, China
| | - Wan-Ping Sun
- 2 Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Soochow University School of Pharmaceutical Science , Suzhou, China
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Cerón-Maldonado R, Martínez-Tovar A, Ramos-Peñafiel C, Miranda-Peralta E, Mendoza-Salas I, Mendoza-García E, Rozen-Fuller E, Kassack-Ipiña J, Collazo-Jaloma J, Martínez-Herrera A, Olarte-Carrillo I. Detection and analysis of tumour biomarkers to strengthen the diagnosis of acute and chronic leukaemias. REVISTA MÉDICA DEL HOSPITAL GENERAL DE MÉXICO 2015. [DOI: 10.1016/j.hgmx.2015.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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